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Posted by Heidi Schwartz This week’s question comes from the Ask The Expert section of the Today’s Facility Manager site.

I am having ongoing battles with sewer odors in several buildings. We have attacked this issue from several sides without a cost effective total solution. I have treated drains, traps, and grease traps. I have checked for air balance to ensure no negative air pressures. I have replaced grease traps. I have installed air emittance devices on vents. In cool weather the odors still seem to invade two of the buildings. What am I missing? I know there may not be a silver bullet for these, but any suggestion are welcome.

Lenny Allen Director of Maintenance Ruidoso Municipal Schools Ruidoso, NM 

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